About: Flows in convergent channel: comparison of numerical results of different mathematical models

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	This study deals with numerical solution of 2D unsteady flow of compressible and incompressible viscous fluid in convergent channel for low inlet airflow velocity. Three mathematical models based on system of Navier-Stokes equations for laminar flow are presented and numerical results of the models in the channel are compared. The unsteadiness of the flow is caused by a prescribed periodic motion of a part of the channel wall with large amplitudes, nearly closing the channel during oscillations. The numerical solution is implemented using the finite volume method and the predictor-corrector MacCormack scheme with Jameson artificial viscosity using a grid of quadrilateral cells. The unsteady grid of quadrilateral cells is considered in the form of conservation laws using Arbitrary Lagrangian-Eulerian method. The numerical results, acquired from a developed program, are presented for inlet velocity ˆuinfinity=4.12 ms-1 and Reynolds number Reinfinity=4x103 and the wall motion frequency 100 Hz. This study deals with numerical solution of 2D unsteady flow of compressible and incompressible viscous fluid in convergent channel for low inlet airflow velocity. Three mathematical models based on system of Navier-Stokes equations for laminar flow are presented and numerical results of the models in the channel are compared. The unsteadiness of the flow is caused by a prescribed periodic motion of a part of the channel wall with large amplitudes, nearly closing the channel during oscillations. The numerical solution is implemented using the finite volume method and the predictor-corrector MacCormack scheme with Jameson artificial viscosity using a grid of quadrilateral cells. The unsteady grid of quadrilateral cells is considered in the form of conservation laws using Arbitrary Lagrangian-Eulerian method. The numerical results, acquired from a developed program, are presented for inlet velocity ˆuinfinity=4.12 ms-1 and Reynolds number Reinfinity=4x103 and the wall motion frequency 100 Hz. (en)
Title	Flows in convergent channel: comparison of numerical results of different mathematical models Flows in convergent channel: comparison of numerical results of different mathematical models (en)
skos:prefLabel	Flows in convergent channel: comparison of numerical results of different mathematical models Flows in convergent channel: comparison of numerical results of different mathematical models (en)
skos:notation	RIV/68407700:21220/13:00226693!RIV15-MSM-21220___
http://linked.open...avai/riv/aktivita	I P Z
http://linked.open...avai/riv/aktivity	I, P(GA201/08/0012), P(GAP101/11/0207), Z(AV0Z20760514), Z(MSM6840770010)
http://linked.open...iv/cisloPeriodika	January
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Pořízková, Petra
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	České vysoké učení technické v Praze / Fakulta strojní
http://linked.open...dnocenehoVysledku	75332
http://linked.open...ai/riv/idVysledku	RIV/68407700:21220/13:00226693
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	CFD; Finite volume method; Unsteady flow; Low Mach number; Viscous compressible fluid; Acoustic pressure (en)
http://linked.open.../riv/klicoveSlovo	Unsteady flow Acoustic pressure Low Mach number Viscous compressible fluid CFD Finite volume method
http://linked.open...odStatuVydavatele	DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV	[6AC364E2B249]
http://linked.open...i/riv/nazevZdroje	Computing
http://linked.open...in/vavai/riv/obor	BA
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Qualitative analysis and numerical solution of flow problems Coupled problems of fluid and solid mechanics - nonlinear aeroelasticity
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	95
http://linked.open...iv/tvurceVysledku	Horáček, J. Kozel, Karel Pořízková, Petra
http://linked.open...n/vavai/riv/zamer	Complex dynamical systems in thermodynamics, fluid and solid mechanics Aplikovaná matematika v technických a fyzikálních vědách
issn	0010-485X
number of pages	13 (xsd:int)
http://bibframe.org/vocab/doi	10.1007/s00607-012-0269-x
http://localhost/t...ganizacniJednotka	21220

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